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WI-FI
1 概念介绍 3
1.1 无线系统图 ...............................................................................................................3
1.2 概述 ...........................................................................................................................3
1.3 WLAN 相关标准工作组、物理层定义图..................................................................4
1.4 802.11 相关技术 ........................................................................................................4
1.5 工作频段介绍 ...........................................................................................................6
1.6 概念引申 ...................................................................................................................7
1.6.1 无线 AP ...........................................................................................................7
1.6.2 无线热点 ........................................................................................................8
1.6.3 Hub、Switch 和 Route ....................................................................................9
2 运用场景 ....................................................10
2.1 网络构架 .................................................................................................................10
2.2 蜂窝网络 .................................................................................................................10
2.2.1 网络构建图 ..................................................................................................10
2.2.2 涉及概念 ......................................................................................................11
2.3 军用网络 .................................................................................................................12
2.3.1 网络构建图 ..................................................................................................12
2.3.2 涉及概念 ......................................................................................................12
2.4 家庭网络 .................................................................................................................13
2.4.1 网络构建图 ..................................................................................................13
2.5 企业网络 .................................................................................................................14
2.5.1 网络构建图 ..................................................................................................14
2.5.2 涉及概念 ......................................................................................................14
2.6 公共无线网络（天翼）..........................................................................................15
2.6.1 网络构建图 ..................................................................................................15
2.6.2 涉及概念 ......................................................................................................15
3 关于嵌入 WIFI 模块的 NVR 设备的测试 ...........................17
4 检查和异常处理 ..............................................19
